Automatic lighter for burners



May 17, 1932'. E. N. JACOB] AUTOMATIC LIGHTER FOR BURNERS Filed June 24.1929 o 1 O 2 & 5 1 1 w W fl WW 3 4 l 2 7 /7 0 3 2 5 ex I z wm II! o l fiG 5 AWORN E Y WITNESSES Patented May 17, 1932 UNITED, STATES rariearemce EDWARD N. JACOBI, OF MILWAUKEE, WISCONSIN, ASSIGNOB TO EDWARD N.JAGOBI, TRUSTEE, OF MILWAUKEE, WISCONSIN AUT MATI LI HTER FOR Bomvrms.

Application filed June 24, 1929. Serial No. 373,357.

V mechanism, making it inexpensive to manufacture.

With the above and other objects in view the invention consists in theautomatic lighter for burners as herein claimed and all N equivalents.

Referring to the accompanying drawings, in which like characters ofreference indicate the same parts in different views,

Fig. 1 is a central sectional view of an automatic lighter for burnersconstructed in Y accordance with this invention, the valve thereof beingin the closed or normal position' Fig. 2 is a similar view with thevalve in the open position caused by the opening of a burner valvereducing the pressure in the supply pipe, and

Fig. 3 is a plan view showing the usual relation of the lighter to theburner.

In these drawings, 10 indicates a gas supply pipe or manifold, which, inthe case of a gas range, supplies a plurality of burners 11 controlledindividually by their valves 12.

A casing 13 has a threaded connection 14: with 1735 the supply pipe 10and is provided with a cup-shaped cover member 15 with a gasketeddiaphragm 16 between them, said diaphragm dividing the casing and itscover into a lower pressure chamber 17 and an upper counter pressurechamber 18. Between these two chambers there is restricted open passageafforded by a passageway 19 in the cover member controlled by a needlevalve 20 and communicating through registering openings in 5 thediaphragm and its gaskets with a passageway 21 in the casing member. Avalve seat 22 formed in the casing member 13 has a pipe 23 connecting itwith a pilot 24 in which there is normally maintained a low 0 pilotflame which develops into radiating jets 'ing to the communicationthrough passageneedle valve 36.

of burnenlighting flame extending to the burners 11 upon the opening ofan automatic valve admitting greater gas pressure thereto.

A set screw 25 is threaded through the casing 13 into the pressurechamber .17 so as to be capable of adjustment, with a lock nut 26thereon for maintaining its adjustment. Within the chamber 17 a yokedmember 27 is swiveled on the end of the screw 25 and forms the fulcrumfora valve lever 28 having 'a conical pilot flashing valve member 29pivotally mounted on one endand having a yoke at the other end with slotand pin connection to a stud 30 anchored to the center of the diaphragm16. A coiled spring 31 has.

one end connected with a spring clip 32 swiveled on the anchor stud30-and its other end engaged by the end of a screw 33 adjustablythreaded through the cover member 15 and provided with a set nut 3&1 forlocking it in I its adjustment. The action of this spring is to hold thevalve closed'on its seat when the gas pressures above and below thediaphragm are equalized, which is the normal state 0W- way 19,21.

For maintaining the normal small pilot light there is a by-pass aroundthe valve formed by a passageway 35 controlled by a In operation theopening of a burner valve 12 causes areduction in pressure within thesupply pipe 10 and therefore within the pressure chamber 17 but, owingto the limited capacity of the passageway 19, 21, the reduction inpressure in the chamber 18 is gradual and for a short time it exceedsthe pressure in chamber 17 to flex the diaphragm 16 and cause thevalvetoopen and admit a greater volume of gas to the pilot, causing it toflash the valve and restore the parts to their normal positions readyfor the next operation when a burner valve is opened.

The period of duration of the lighting flame may be varied by theadjustment of needle valve and the proper adjustment of the valve andthe spring may be made by 5 adjusting screws and 33 respectively.

The burner lighter of this invention isoof simple,.inexpe nsiveconstruction but is durable and free from parts likely torequireattention so as to render service indefinitely in the automatic lightingof iburn'ers .whenever their valves are opened. I V

lVhile, for convenienceof illustration, the needle valves 20 and 36arerepresente'dasdi ametrically opposite, itmay be preferredto 15 locatethem otherwise, such as 90 apart.

' WhatI-iclaim. asrnew and desire to secure .by (Letters Patent-is:

il. ,Alighter fora burner havingvalve con- :nectionwith aasupplypipe,comprising a. cas- 520 ing communicating with 1 the supply 5 pipe, a"diaphragm in .thecasing dividing it into. a ;pressure chamber and acounter press-ure chambenwthere being=a restricted communication betweenthe twov chambers, a. pilot flash- 4:25 ing valve operatedbythediaphragni and a "pilot'with its=supply controlled by the pilot flashingvalve.

.-2..A lighter for-a burner'having connection with a supply pipe,::apressure-sensitive diaphragm having both '7 sides :Sllbj'BCllQCl t0 'thepressurein thezsuppl-y pipe, therebeing a the yoke, a valve carried bythe lever, a stud on the diaphragm engaging the lever, and a pilot withits supply controlled by the valve.

6. A lighter for a burner having valve connection with a supply pipe,comprising a casingchaving communication with the supply ;pi .pe, therebeing a valve seat inithe casing, a pilot communicating therewith, acup-shaped cover for the casing, a diaphragm mountedlbetweem'ztheccasingiandizthe-lcover, :azstud :cartried by.thevdiaphragm, an adjusting screw threaded in the cover, a springconnecting the-atljusting-sc'rew with the stud, an adjusting screwthreaded in the casing, a lever having a fulcrum swiveled on saidadjusting screwandhavingt one .end connected with the -stud,aivalveconnected withtheothemend of .the..1ever -andsseated on "the valve seat,and valve-controlled passages connecting .the

.spacesnon opposite sides "o'fth'e diaphragm,

.andconnectingthezinterior of the casing with the pilot connectionrespectively.

:Intestimony whereof L affix my. signature.

7 .EDWARD "JACOBL restricted passageway for communicating pressuretotoneside ot the diaphragm,-.a pilot =f'lashing valve operated by thediaphragm,

'35 and-a pilot with its supply -controlledfby the :pilot flashingvalve.

3..;A bur-ner lighter comprisingta casing,- a

' cover therefor, a diaphragm" between the eas- .ingfand'cover'dividingthe interiorinto a Y wroipressu-re chamber and a cormter-pressurechamber, a supply pipe COIIIIQCt-dQHZfOI'Et'hB pressure chamber, a 5pilot connection :for the pressure chamber I forming a valve ;seat,=:and

a pilotiflashingivalve seated thereon there 5 being a restricted passagetconinectin-gethe pressure: chamber with the counter pressure chamber.

l. .A lighter fora burner :havingvalveconnect-i-on with a supply pipe,comprising a casv i-n-gcommunicating -withthe suipply pipe, a

' diaphragm dividing the casing intotwo, pres- --.sure':cham:bers,-there being a 1 restricted) passage connecting said chambers, aspringseated ;.pilot flashing valve operated :by [the 55 diaphragm, anda pilot fihaving communication with the: chamber controlled by. thepilot.

A lighter for a burner :havi-ng valve -connection with-a supply pipecomprising a va diaphragm therein dividing the casing 1nto twopressurejchambers, therebein-g a'restri'ct fed passageway connecting thechambers,;ran adjustable'set screw in the casing-, a pivot 65 yokeswivele'd thereon, 'a lever'fulcrumed in

